Hydraulic machine



Dec. 11 1923. 1,476,998

. V F. NAGLER HYDRAULIC MACHINE Filed July 11 1921 PatentedDec. 11,1923..-

- UNITED S A ES PATENT hORRIlST NAGLER, F WAU'WATOSA, WISCONSIN, ASSIGNOR TO ALLlS-CHALMERS DELAWE. 1

HYDRAULIC MACHINE.

' Application and July 11-, 1921. Serial no, 488,988.

To all wiiom't may concern:

Be it known that Fonnns'r NAGLER, a citizen oi the United States, residing at Wauwetosa, in the county of Milwaukee and It State of Wisconsin, has invented a certain new and ful Improvement in Hydraulic Machines, of which the following is a specihcetion.

This invention relates in general to imrovements in the art of hydraulics, and reates more specifically to improvements in the construction and operation of direct connected rotary hydraulic machines such as pumps and turbines.

An object of the invention is to provide a hydraulic machine which is simple in construct on and eilioient in operation. Another object is to provide for proper alinement of the elements of direct connected hydraulic machines, either of the type wherein a prime mover is employed to drive a pump, or of the type wherein a hydraulicall actuated element drives on energy absor er. A further object is to provide an improved structure which serves the dual function of supporting elements of a hydraulic machine and of conducting liquid. Still another ohect is to provide an excingl simple an compect hydraulic unit w ich is especially edepted for installation in laces where the nveilable specs in limi. l hese and other objects end edvnntagesoi the invention will be apparent fro the following description. A clear conception of an embodiment oi the invention and of the operation of a dew in accordance therewith,

' may be h by ferring to the drawing accompanying end forming a part of this specification in which like reference characters desiiate the same or similar parts in the various views Fig. i is apart sectional side elevation cl a motor driven pump unit, the section heing talren centrally through the pump and the conduits ling to and om the same;

Fig. 2 is top view of the motor support ing element end pump, the motor having heen omitted,

Fig. 3 is a fragmentary central vertical section through another to or" l mp.

ile the invention is illustrate an deeeri herein as applied specifically to an electric mr driven rotary pump, it will llh lid

- element 5, a horizontal inlet piped, communieating with the suction passe e of the element 5, and a horizontal disc arge pipe 8 likewise communicating with the passage in the base 5. The electric motor 2 is provided with lower supporting feet whichrest upon and are secured to upper pads 13 formed integral with the base element 5. The base element is provided with dependin lower pads or feet 14 which form supponts or both the motor 2 and the pum The base element 5 is further provi ed with conduit portions or passe cs 10, 11, the former oi which is located 'irectly low the motor 2 and communicates directly with the inlet pipe ti, and the latter of which is inclined and connects the passage with the inlet side of the pump impeller 3 on the side oi the impeller facing the motor 2. The discharge pipe 8 forms a horizontal discharge conduit 12 communicating axially with the impeller 3 and with the passage 11 :lormecl in the base element 5. Between the base element 5 and the discharge pipe 8 is located a bearing su port 7 having fluid guiding vanes 9 exten 'ing inwardly through the discharge conduitlfl and supporting a central bearing for the shaft 4 located closely adjacent to the impeller 3. 'lheshait i penetrates .a boss 15 formed'on the base 5, and may be provided with astuiilng box in this In the installation illustrated in Fig. 3, the inclined suction passage 22 formed in the base element 16 is directed axially toward the ipeller 19 on the side thereof lacing the driving motor, not shown, which may be similar that disclosed in l. The horizontnl discharge pipe 18 has n topered conduit Q3 therein which likewise counicetes axially with the impeller 20. The heering supporting element 17 is located between the base element 16 and the pi 18 in advance of the impeller 20 and has aring supporthACTUBING COMPANY, OF MI LWAUKEE, WISCONSIN, A CQRPORA'LION ()F I lid Mill

ing guide vanes 19 which are formed to properly guide the water toward the impeller 20. The main shaft 21 penetrates a boss 24 of the base element 16 and may also be provided with a suitable stufing box at the boss.

During normal operation of the installatrion illustrated in Figs. 1 and 2, the operation of the motor 2 produces rotation of the shaft 4: and of the impeller 3, causing the impeller to draw liquid from the inlet pipe 6 through the passages 10, 11 and to deliver the liquid past the guide vanes 9 and into the discharge conduit 12. The formation of the guide vanes 3 is such that the whirling'liquid delivered from the impeller 3 is caused to how axially into the conduit 12, such delivery being desirable in order to redues to a minimum the hydraulic friction losses induced by the advancing fluid. The delivery of the liquid axially to the impeller 3 and the axial discharge therefrom, fur ther reduces the hydraulic losses. The friction losses are further reduced by entirely avoiding abrupt turns in the course of the li uid, thereby producing a unit of maximum e ciency. By associating both the motor 2 and the impeller 3 with a common base element 5, perfect alinement of the driving and driven members is positively assured. The entire unit is exceedingly compact thereb enabling its installation where the avail able space for such installation is limited.

The operation of the unit disclosed in Fig. 3 is similar to that disclosed in Figs. 1 and 2, differing only in that the guide vanes 19 serve to admit the liquid to the impeller 20 with whirling components. The gradually tapering discharge conduit 23 servesas a diliuser for effectively converting the velocity energy of the'discharged Ii uid into pressure.

t will be obvious that either of the units illustrated may readily be employed as a turbine unit by a. l 'tting the liquid through the conduit 12, from a suitable source adapted to produce static pressure, and by substituting a suitable energy absorber for the driving element or motor 2. The passages 10, 11 are formed to effect diffusion of the fluid discharged from the turbine impeller and the turbine unit thus produced would be exceedingly simple, compact and herein shown and described, for various intense modifications within the scope of the claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a bladed rotor, on energy translating device having a rotor direct connected with said bladed rotor, and a single casing providing a direct support for said device and for said bladed rotor and forming a conduit communicating with said bladed rotor, said casing conduit having a portion extending in line with the axis of said rotors, another portion parallel to said axis, and another portion connecting said. axial and parallel portions and forming an oblique angle with said axis.

2. In combination, a bladed rotor, an energy translating device having a rotor direct connected with said bladed rotor, and a single casing providing a direct support for said device and for said bladed rotor and forming a conduit communicating with said bladed rotor, said casing conduit having a portion below said device which is laterally widened and vertically narrowed.

3. In combination, a bladed rot-or, an energy translating device having a rotor direct connected with said bladed rotor, and a single casing providing a direct support for said device and for said bladed rotor, said casing forming a conduit extending below said device and communicating with the side of said bladed rotor facing said device, said conduit having a circular cross sectional area adjacent to said bladed rotor and being laterally widened and vertically narrowed below said device.

4. In combination, a bladed rotor, an energy translating device having a rotor direct connected with said bladed rotor, and a single casing providing a direct sup port for said device and for said bladed rotor, said casing forming a conduit. comprising a portion located below said dcvice and extending parallel to the axis of said rotor, another portion extending in line with said axis, and another portion connecting said axial and parallel portions and forming an oblique angle with said axis, the portion of said conduit extending in line with said axis being circular in cross section and the portion of said conduit located below said device being laterally widened and vertically narrowed.

In testimony whereof, the signature of the inventor is affixed hereto.

FORREST NAGLER.

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